Leaf or sheet for temporary binders.



R. KRUMMING.

LEAF 0R SHEET FOR TEMPORARY BINDERS. APPLICATION FILED DEC.20,1915.

Patented- Dec. 12.1916.

, l w 1' EH. I.

I I I i J i WITNESSES IN VEN TOR.

BEINI-IOLD KRUMMING, 0F MILWAUKEE, WISCONSIN.

LEAF 0R SHEET FOR TEMPORARY BINDERS.

Specification of Letters Patent.

Patented Dec. 112, I916.

Application filed. December 20, 1915. Serial No. 67,869.

To all whom it may concern:

Be it known that I, REINHOLD KRUM- MING, a citizen of the United States,residing at Milwaukee, county of Milwaukee, State of Wisconsin, haveinvented certain new and useful Improvements in Leaves or Sheets forTemporary Binders, of which the following is a specification.

This invention relates to improvements in leaves or sheets for temporarybinders.

My improved leaves or sheets are especially designed by me for use inalbums, although desirable for use in various relations.

The main objects of my invention are: First, to provide an improved leafor sheet of the class described having a reinforced binding margin.Second, to provide an improved leaf of the class described having athickened binding margin. Third, to provide an improved leaf of theclass described having these advantages which is very simple andeconomical to produce.

Further objects, and objects relating to structural details, willdefinitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and meansdescribed in the following specification.

The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearlyillustrated in the accompanying drawing, forming a part of thisspecification in which:

Figure I is a plan view of my improved sheet or leaf. Fig. II is a planview of the blank from which the same is formed, showing steps in itsmanufacture. Fig. III is an enlarged detail longitudinal section on aline corresponding to line 33 of Fig. I. Fig. IV is an enlarged detaillongitudinal section on a line corresponding to line 44 of Fig. I. Fig.V is an enlarged detail transverse section on a line corresponding toline 5-5 of Fig. I.

In the drawing similar reference characters refer to similar partsthroughout the several views, and the sectional views are taken lookingin the direction of the' little arrows at the ends of the section lines.

Referring to the drawing, my improved sheet 1 is formed from a blank, asshown in Fig. II, with alined oppositely disposed transverse slits 2extending from its edges and longitudinal slits 3 extending forwardlyfrom the transverse slits. The part of the sheet at the rear of thtransverse slits constitutes a binding reinforcing flap 4:. I preferablyform a line. of perforations 5 between the slits 2 to facilitate foldingof the binding flap. The binding flap is folded along the line of theslits 2 and inserted through the longitudinal slits 3. The portions 6 atthe outside of the longitudinal slits 3 constitute flap retainingmembers. With the flap thus folded and engaged with the retainingmembers it is securely retained in its folded position. The flap and itsretaining members are provided with registering perforations 7 adaptedto re ceive binding members, such as the posts, of a temporary binder. Ialso preferably score the sheet at 8, the scoring being adjacent to butspaced from the inner edge of the binding flap so as to provide a hingeor flexing line for the leaf. The slitting, scoring, perforating andpunching can be practically performed at a single operation so that itis only necessary tofold the flap and engage it in the slits or underthe retaining members to complete the sheet, and this may be done veryrapidly and easily. By this arrangement I secure a reinforced and also athickened binding margin for the sheet and at nominal cost. The sheet isalso neat and attractive in appearance.

Although the form and location of the flap retaining members may beconsiderably varied without departing from my invention, I have notattempted to illustrate or describe such variations or modifications asI believe the disclosure made will enable those skilled in the art toembody my improvements as conditions may require or taste dictate. Idesire, however, to be understood as claiming my improvementsspecifically in the form illustrated as well as broadly within the scopeof the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. A leaf having alined opposed transverse slits extending from itsedges and longitudinal slits extending forwardly from such transverseslits, said sheet being folded on the line of said transverse slits, thefolded portion constituting a binding member flap, the portions at theoutside of said longitudinal slits constituting flap retaining members,said flap being disposed through said longitudinal 'slits, the sheet being provided With perforations through said flap and parts overlappingtherewith and being transversely scoredadjacent the inner edge of saidflap to facilitate flexing.

2. A leaf having alined opposed transverse slits extendlng from itsedges and longitudinal slits extending forwardly A from such transverseslits, said sheet being folded on the line of said transverse slits, thefold- ,edportion constituting a binding flap and being disposed throughsaid longitudinal slits, there being a line of perforations besuchtransverse slits, said sheet being folded on the line of said transverseslits and the ends ofthe folded portion being disposed through saidlongitudinal slits.

4. A leaf having a flap portion at its binding edge folded back upon theleaf body, there being transverse slits extending from each edge, andlongitudinal slits extending forwardly :from such transverse slits, theparts on the outside of said longitudinal slits constituting flapretaining members, said flap retaining members being arranged over saidflap, there being registering binding member perforations through saidflap retaining members and flap, said sheet being scored transverselyadjacent the inner edge of said flap to provide a point of fiexure.

5. A leaf having a flap portion at its binding edge folded back upon theleaf body, there being transverse slits extending from each edge, andlongitudinal slits extending forwardly from such transverse slits, theparts on the outside of said longitudinal slits constituting flapretaining members, said flap retaining members being arranged over saidflap, there being registering binding member perforations through saidflap retaining members and flap.

6. A leaf having a flap portion at its binding edge folded back upon theleaf body, the leaf body being longitudinally and transversely slittedto provide a flap retaining member, such retaining member being engagedover the flap, there being registering binding member perforationsthrough said flap and retaining member.

In Witness whereof, I have hereunto set my hand and seal in the presenceof two \vitnesses.

REINHOLD KRUMMING.

Witnesses ARNOLD VVANGERIN, A. G. LENMANN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

. Washington, D. C.

